"Kenneth E. deGraffenreid, former deputy national counterintelligence executive, said the Shriver case is further evidence of a wide-ranging Chinese government program against U.S. national interests.

"'This is another example of the breadth and depth of Chinese operations against U.S. national security,' he said. 'Those operations range from sustained cyber-attacks to deep-penetration agents [inside the U.S. government], like the kind of agent Mr. Shriver was meant to be.'"